Observatory · observe first
American Electric Power
AEP · United States · Electric Utilities · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.247%
12M weight contribution
+0.044 pp
3M weight contribution
+0.015 pp
12M price return
+31.2%
Share of matched S&P 500 members
Monthly observations through May 2019
Company price index
A separate dimension from market allocation
Historical observations
Most recent 24 observations at or before the selected month
| Month | Market cap | Universe weight | 12M weight change | 12M return | Above 6M weight average |
|---|---|---|---|---|---|
| May 2019 | $42.5bn | 0.247% | +0.044 pp | +31.2% | Yes |
| Apr 2019 | $42.2bn | 0.235% | +0.023 pp | +26.7% | Yes |
| Mar 2019 | $41.3bn | 0.237% | +0.030 pp | +26.5% | Yes |
| Feb 2019 | $40.0bn | 0.232% | +0.039 pp | +28.2% | Yes |
| Jan 2019 | $39.0bn | 0.129% | -0.064 pp | +19.3% | Yes |
| Dec 2018 | $36.9bn | 0.132% | -0.061 pp | +12.7% | No |
| Nov 2018 | $38.3bn | 0.127% | -0.066 pp | +17.2% | No |
| Oct 2018 | $36.2bn | 0.123% | -0.070 pp | +9.7% | No |
| Sep 2018 | $34.9bn | 0.111% | -0.082 pp | +5.9% | No |
| Aug 2018 | $35.4bn | 0.114% | -0.079 pp | +7.2% | No |
| Jul 2018 | $35.1bn | 0.205% | +0.012 pp | +5.4% | Yes |
| Jun 2018 | $34.1bn | 0.207% | +0.014 pp | +2.6% | Yes |
| May 2018 | $33.5bn | 0.203% | +0.010 pp | +0.7% | Yes |
| Apr 2018 | $34.5bn | 0.212% | +0.019 pp | +2.7% | Yes |
| Mar 2018 | $33.7bn | 0.207% | +0.014 pp | +0.7% | Yes |
| Feb 2018 | $32.3bn | 0.193% | +0.000 pp | -3.7% | Yes |
| Jan 2018 | $33.8bn | 0.193% | +0.000 pp | +0.0% | No |
Its weight is estimated market cap divided by the total estimated market cap of matched S&P 500 members for the month. This is not an official float-adjusted S&P index weight.